VLZ3V0B-GS08 Equivalent & Substitute Parts

Part Overview

The VLZ3V0B-GS08 is a Zener Diode rated at 3.12 V with 500 mW power dissipation in a surface mount SOD-80 QuadroMELF package. Manufactured by Vishay General Semiconductor - Diodes Division, this component is classified as Obsolete. Due to its obsolete status and limited availability in new production, identifying equivalent substitute parts is necessary for ongoing design support, production continuity, and system maintenance.

Substiute Parts

VLZ3V0B-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 2741VLZ3V0B-GS08 Datasheet

Current PartRFQ

TLZ3V0B-GS08

Vishay General Semiconductor - Diodes DivisionIn Stock: 2923TLZ3V0B-GS08 Datasheet

DirectRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the VLZ3V0B-GS08 is determined by the following critical parameters:

Electrical Compatibility:

• Zener voltage within acceptable tolerance of 3.12 V nominal
• Power dissipation rating of 500 mW or greater
• Reverse leakage current of 10 µA @ 1 V or lower
• Forward voltage of 1.5 V @ 200 mA or lower
• Operating temperature range of -65°C to 175°C or greater

Mechanical & Package Compatibility:

• Surface mount technology
• SOD-80 package footprint compatibility
• Automotive grade qualification (AEC-Q101)
• ROHS3 compliance
• Moisture Sensitivity Level 1

The substitute part TLZ3V0B-GS08 meets these criteria with a nominal Zener voltage of 3 V, which represents a 3.8% deviation from the main part specification. Both parts share identical power ratings, operating temperature ranges, compliance certifications, and surface mount SOD-80 package compatibility.

Parameter Comparison

Engineering Selection Recommendations

The TLZ3V0B-GS08 is the direct substitute for the obsolete VLZ3V0B-GS08. Both components are manufactured by Vishay General Semiconductor - Diodes Division and share identical electrical performance in power dissipation, reverse leakage current, and forward voltage characteristics.

Compliance & Availability: The substitute part maintains ROHS3 compliance and Moisture Sensitivity Level 1 status. The TLZ3V0B-GS08 carries Active product status with 2850 pieces in stock, ensuring production continuity compared to the obsolete main part with limited inventory.

Electrical Substitution: The Zener voltage difference of 0.12 V (3.12 V nominal to 3.0 V nominal) represents a 3.8% deviation. The impedance specification increases from 70 Ohms to 80 Ohms maximum. These variations remain within typical circuit tolerance margins for voltage regulation and protection applications.

Package Consideration: Both parts utilize SOD-80 surface mount packages. The main part uses QuadroMELF variant while the substitute uses MiniMELF variant. Both are compatible with standard SOD-80 PCB footprints.

Frequently Asked Questions (FAQ)

Q: Can the TLZ3V0B-GS08 directly replace the VLZ3V0B-GS08 in existing designs?

A: Yes. Both components share identical power ratings (500 mW), operating temperature ranges (-65°C to 175°C), reverse leakage specifications (10 µA @ 1 V), and forward voltage characteristics (1.5 V @ 200 mA). The Zener voltage difference of 0.12 V is within acceptable substitution tolerance for most voltage regulation and protection circuits.

Q: What is the significance of the Zener voltage difference between 3.12 V and 3.0 V?

A: The 3.8% deviation in nominal Zener voltage reflects different design points within the same product family. Circuit designs with voltage regulation or protection functions typically accommodate ±5% to ±10% tolerance in Zener voltage. Verify specific circuit requirements if tighter voltage tolerance is mandated.

Q: Are there package compatibility concerns between QuadroMELF and MiniMELF variants?

A: Both variants conform to the SOD-80 package standard and share identical PCB footprints. The physical size difference between QuadroMELF and MiniMELF does not affect electrical performance or board-level compatibility.

Q: Why is the impedance specification different (70 Ohms vs. 80 Ohms)?

A: Impedance variation reflects manufacturing process differences between the VLZ and TLZ series. The 10 Ohm increase remains within acceptable limits for Zener diode applications and does not impact circuit functionality in standard voltage regulation or transient protection configurations.

Q: What is the compliance status of the substitute part?

A: The TLZ3V0B-GS08 maintains ROHS3 compliance, Moisture Sensitivity Level 1 (Unlimited), and REACH Unaffected status. Automotive grade qualification is specified for the main part; verify AEC-Q101 qualification requirements for your specific application.

Q: Is the substitute part available for immediate procurement?

A: Yes. The TLZ3V0B-GS08 carries Active product status with 2850 pieces in stock, providing immediate availability compared to the obsolete VLZ3V0B-GS08.